[libgweather] location: Fix gir-scanner compile time error

[Bastien Nocera <hadess src gnome org>]

commit b1cb7dcabb82f06dc287ed336080ce2686f3ee91
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Nov 30 12:32:58 2017 +0100

    location: Fix gir-scanner compile time error
    
    libgweather/gweather-location.c:804: Warning: GWeather: gweather_location_detect_nearest_city: invalid 
return annotation
    
    There's nothing returned from the function, so no need to document
    "Returns".
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791066

 libgweather/gweather-location.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/libgweather/gweather-location.c b/libgweather/gweather-location.c
index 500ff80..ba3ead4 100644
--- a/libgweather/gweather-location.c
+++ b/libgweather/gweather-location.c
@@ -758,8 +758,6 @@ _got_place (GObject      *source_object,
  * @loc must be at most a %GWEATHER_LOCATION_ADM2 location.
  * This restriction may be lifted in a future version.
  *
- * Returns: void
- *
  * Since: 3.12
  */
 void